Improper Public Key Authentication in cURL Affects Multiple Users
CVE-2025-15224

3.1LOW

Key Information:

Vendor

Curl

Status
Curl
Vendor
CVE Published:
8 January 2026

What is CVE-2025-15224?

A vulnerability in cURL during SSH-based file transfers using SCP or SFTP can lead to improper public key authentication. When users are prompted for public key authentication, cURL incorrectly interacts with a locally running SSH agent, potentially allowing unauthorized access during transfers. This issue underscores the need for users to ensure they are using secure configurations to mitigate risks.

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Affected Version(s)

curl 8.17.0

curl 8.16.0

curl 8.15.0

References

https://curl.se/docs/CVE-2025-15224.json
https://curl.se/docs/CVE-2025-15224.html
https://hackerone.com/reports/3480925

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Harry Sintonen
Harry Sintonen
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